Fluent material handling – with receiver or receiver coacting mea – Diverse fluid containing pressure filling systems involving... – Filling with exhausting the receiver
Patent
1976-04-22
1977-11-08
Aegerter, Richard E.
Fluent material handling, with receiver or receiver coacting mea
Diverse fluid containing pressure filling systems involving...
Filling with exhausting the receiver
137100, 141290, 141301, 251282, B65B 3104, B67D 504, G05D 1102
Patent
active
040570851
ABSTRACT:
A flow control valve particularly useful for a vapor recovery system of a gasoline station. Gasoline and gasoline vapor flow through separate passages in the valve. A restriction (venturi) is provided in the gasoline passage so that a pressure differential will be produced in the passage as a function of the rate of flow of gasoline passing therethrough. A first diaphragm carrying a valve element which controls the flow of fluid through the vapor passage is responsive to said pressure differential so that the flow rate of vapor passing through the valve will be proportional to the flow rate of gasoline. In each of two alternative embodiments, another diaphragm responsive to gasoline pressure is ganged to the valve to compensate for gasoline pressure variations. In a further embodiment, the vapor control valve operates in an "on-off" mode so that a maximum vapor "draw back" is effected whenever gasoline flow of any magnitude is extant.
REFERENCES:
patent: 3047003 (1962-07-01), Gurney
patent: 3899009 (1975-08-01), Taylor
Aegerter Richard E.
International Telephone and Telegraph Corporation
Schmidt Frederick R.
Stolzy A. Donald
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